Huawei P20 Pro (CLT-L09) battery drain

Hi, I've just purchased a Huawei P20 Pro dual sim. I am using only one sim card and already have a phone for 4 days.

Guys, I've just wanted to ask you what to expect from the battery? I am using phone moderately - some Google Chrome, some Facebook, also a bit of messages and calls. Taking some photos. No video watching or music listening.

What I've encountered is that my battery usually lasts only ~24-26hr with charge dropping from 95% to 18-20%. Overnight it is from 3% to 7% drop, and when not using it, it doesn't seem to drain rapidly, but whenever I use the phone I can even see percents dropping in several minutes. Like if I use it for 5 minutes, it would be 1%.

Today in the morning while I was on my way to work, it dropped from 88% to 79% after some usage and reading articles in Chrome, then putting it down and reading again during ~40 minutes.

I've seen some reviews about 2 full days for this model, but for me it doesn't seem to be a case. Huawei's HiCare doesn't seem to find any problem with my battery, also, I did a cache partition wipe and factory reset.

So, my question would be is it ok with my expectations too high or should I visit a service centre?

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